The starting point
A drop on the surface
Today we follow an ordinary drop from your pool. Scroll slowly: you’ll see, part by part, everything that happens to it before it returns to the water.
Interactive experience
A drop’s journey
Scroll slowly and follow a drop through your pool’s whole circuit: what happens to it at each part before it returns, clean, to the water.
Stop 1
Skimmer
Surface water leaves here, where leaves, insects and sunscreen residue float. The skimmer basket catches the larger debris before the drop moves on.
Stop 2
Pre-filter
Just before the pump, another basket traps leaves and solid debris to protect the impeller. If the lid seal is dried out, air gets in: the pump gets noisy and moves little water.
Stop 3
Pump
The heart of the circuit: its impeller spins and, by centrifugal force, drives the drop from the suction side to the filter.
Stop 4
Multiport valve
This is where the route is decided. On filter, where it spends almost all its time, the drop goes into the filter. Turning it with the pump running damages it.
Stop 5
Sand filter
The drop passes through the sand, which traps the fine particles the pre-filter let through. The gauge shows how clogged it’s getting: 0.4-0.5 bar above normal means it’s time to backwash.
Stop 6
Salt chlorinator
Between its titanium plates, with a small voltage, dissolved salt becomes active chlorine that disinfects the drop… and shortly after turns back into salt.
Stop 7
Return inlet
Clean and treated, the drop goes back into the pool. Well aimed, the inlets help push the surface towards the skimmer.
And round again
Back into the circuit
While the pump is running, the journey repeats again and again. That’s why filtration hours matter, and they follow the season: more in summer, fewer as temperatures drop.
Simplified diagram of the most common circuit (sand filter and salt chlorinator): every installation has its own layout.
Want us to check your circuit?
On every visit we check the pre-filter, pump, filter and the rest of the equipment. Book a no-obligation visit.